TriangleCheckerAssignment/test/TriangleCheckerTest.java

import org.junit.Test;
import static org.junit.Assert.*;

public class TriangleCheckerTest {

    @Test
    public void testValidTriangle() {

        // Arrange
        float a = 2;
        float b = 3;
        float c = 4;

        // Act
        TriangleChecker.TriangleType type = TriangleChecker.checkTriangle(a, b, c);

        // Assert
        assertEquals(TriangleChecker.TriangleType.NORMAL, type);

        a = 1; b = 1; c = 100;

        TriangleChecker.TriangleType type2 = TriangleChecker.checkTriangle(a, b, c);
        assertEquals(TriangleChecker.TriangleType.NONE, type2);

        a = 3; b = 3; c = 2;

        TriangleChecker.TriangleType type3 = TriangleChecker.checkTriangle(a, b, c);
        assertEquals(TriangleChecker.TriangleType.ISOSCELES, type3);

        a = 3; b = 3; c = 3;

        TriangleChecker.TriangleType type4 = TriangleChecker.checkTriangle(a, b, c);
        assertEquals(TriangleChecker.TriangleType.EQUILATERAL, type4);

    }

}